Tony just for your information plural nebula is written as nebulae and pronounced as nebuli.
As H said you don't get much colour when viewing. Only in very large telescopes does one see colour. The view through most telescopes is monochromatic. This is because of our eye light receptors, that being rods and cones. Our night vision as a species is not great and so colour reception is only possible on bright objects such as some stars, planets and very occassionally Nebula through large telescopes which provide more light.
